Auto merge of #141066 - matthiaskrgr:rollup-e7tyrj5, r=matthiaskrgr

Rollup of 9 pull requests

Successful merges:

 - #140791 (std: explain prefer `TryInto` over `TryFrom` when specifying traits bounds on generic function)
 - #140834 (move (or remove) some impl Trait tests)
 - #140910 (Remove `stable` attribute from wasi fs (read_exact|write_all)_at)
 - #140984 (fix doc for UnixStream)
 - #140997 (Add negative test coverage for `-Clink-self-contained` and `-Zlinker-features`)
 - #141003 (Improve ternary operator recovery)
 - #141009 (Migrate to modern datetime API)
 - #141013 (Implement methods to set STARTUPINFO flags for Command API on Windows)
 - #141026 (rustc-dev-guide subtree update)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

README.md

@@ -91,6 +91,16 @@ Older versions of `josh-proxy` may not round trip commits losslessly so it is im
 3) Push the branch to your fork and create a PR into `rustc-dev-guide`
 
 ### Push changes from this repository into `rust-lang/rust`
+
+NOTE: If you use Git protocol to push to your fork of `rust-lang/rust`,
+ensure that you have this entry in your Git config,
+else the 2 steps that follow would prompt for a username and password:
+
+```
+[url "git@github.com:"]
+insteadOf = "https://github.com/"
+```
+
 1) Run the push command to create a branch named `<branch-name>` in a `rustc` fork under the `<gh-username>` account
     ```
     cargo run --manifest-path josh-sync/Cargo.toml rustc-push <branch-name> <gh-username>